So I silently sneak in after him to find him with a panicked look, with loads of toilet paper in his hand balled up, cleaning up a pile of toothpaste. I just looked at him, and he explained to me right away "I don't know who made this mess, I'm just cleaning it up." I thought it was so cute, and went with it. I spoke to him about how I hope this "other" person that made the mess knows not to do it again. ;)
I'm sure he thought he had me fooled. LOL!